Feat: replaced AT&T assembly syntax with intel

[0x00Jeff]

you can use gcc's -masm=intel flag to avoid having to write AT&T syntax

[0x00Jeff]

another trick I like is that fact that operations to the lower 32 bit portions of 64 bit registers cause the upper 32 bit to zero, so mov esi, 1 would do the same thing as mov rsi, 1, but generates shorter bytes in the bytecode

this is especially useful when zeroing registers, one can use xor esi, esi instead of mov rsi, 0 which is both faster (as xor reg, reg is recognized by the cpu as zeroing idiom) and smaller by 3 bytes, I think these are not so important but nice assembly subtleties nonetheless